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1 // Copyright (c) 2001-2011 Hartmut Kaiser
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2 //
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3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
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4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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5
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6 #if !defined(BOOST_SPIRIT_KARMA_STRING_COMPARE_AUG_08_2009_0756PM)
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7 #define BOOST_SPIRIT_KARMA_STRING_COMPARE_AUG_08_2009_0756PM
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8
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9 #if defined(_MSC_VER)
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10 #pragma once
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11 #endif
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12
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13 #include <string>
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14 #include <boost/spirit/home/support/char_class.hpp>
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15 #include <boost/spirit/home/karma/detail/generate_to.hpp>
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16 #include <boost/range/iterator_range.hpp>
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17
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18 namespace boost { namespace spirit { namespace karma { namespace detail
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19 {
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20 template <typename Char>
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21 bool string_compare(Char const* attr, Char const* lit)
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22 {
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23 Char ch_attr = *attr;
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24 Char ch_lit = *lit;
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25
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26 while (!!ch_lit && !!ch_attr)
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27 {
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28 if (ch_attr != ch_lit)
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29 return false;
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30
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31 ch_attr = *++attr;
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32 ch_lit = *++lit;
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33 }
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34
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35 return !ch_lit && !ch_attr;
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36 }
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37
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38 template <typename Char>
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39 bool string_compare(Char const* attr, Char const* lit, unused_type, unused_type)
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40 {
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41 return string_compare(attr, lit);
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42 }
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43
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44 template <typename Char>
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45 bool string_compare(unused_type, Char const*, unused_type, unused_type)
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46 {
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47 return true;
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48 }
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49
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50 template <typename Char, typename CharEncoding, typename Tag>
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51 bool string_compare(Char const* attr, Char const* lit, CharEncoding, Tag)
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52 {
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53 Char ch_attr = *attr;
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54 Char ch_lit = spirit::char_class::convert<CharEncoding>::to(Tag(), *lit);
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55
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56 while (!!ch_lit && !!ch_attr)
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57 {
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58 if (ch_attr != ch_lit)
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59 return false;
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60
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61 ch_attr = *++attr;
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62 ch_lit = spirit::char_class::convert<CharEncoding>::to(Tag(), *++lit);
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63 }
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64
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65 return !ch_lit && !ch_attr;
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66 }
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67
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68 template <typename Char, typename CharEncoding, typename Tag>
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69 bool string_compare(unused_type, Char const*, CharEncoding, Tag)
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70 {
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71 return true;
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72 }
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73
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74 }}}}
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75
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76 #endif
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